Copy-evident document
Copy-evident documents have features that make it detectable that a copy is not the original. In security printing various methods such as void pantograph are used to create patterns that are hard to copy exactly and when copied inexactly produces an easily detectable image. This can include halftone screens that are affected by the copying process, fine line patterns in different directions that are differently affected by copying and hence produce a mark, metallic inks causing diffraction or reflection.
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Copy-evident document
Copy-evident documents have features that make it detectable that a copy is not the original. In security printing various methods such as void pantograph are used to create patterns that are hard to copy exactly and when copied inexactly produces an easily detectable image. This can include halftone screens that are affected by the copying process, fine line patterns in different directions that are differently affected by copying and hence produce a mark, metallic inks causing diffraction or reflection.
has abstract
Copy-evident documents have fe ...... copies will lack these marks.
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Wikipage page ID
40,617,088
Wikipage revision ID
708,264,799
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Copy-evident documents have fe ...... ing diffraction or reflection.
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Copy-evident document
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